#  include  <stdio.h>

int main (){
    int y=0;
    int f=0;
    int n=0;
    scanf("%d",&n);
    while(!((98*f-n)%199==0)&&f<100){
    	f++;
   
	}
	if((98*f-n)%199==0){
      printf("%d.%d",98*f/199,f);
  }else{printf("No Solution");
  }
	return 0;
}
